rewrite: remove deprecated stuff

This cleans out all the old stuff that won't be needed anymore.
Merge pull request #6 from kellyredding/kr-remove-old

rewrite: remove deprecated stuff
rewrite: use Mailer instances that each have their own settings

This bring in ns-options to handle Mailer configuration.  You now
create individual mailers each with their own settings.
Merge pull request #7 from kellyredding/kr-mailer

rewrite: use Mailer instances that each have their own settings
rewrite: send mail

This reworks the mail sending stuff.  You now send mail by calling
`send_mail` on a mailer and passing it a message object.  The message
will be validated, sent using the mailers settings, and logged.

A message can be any object as long as it implements the necessary
API.  However, Mail (https://github.com/mikel/mail) is recommended
and required in by default.
Merge pull request #9 from kellyredding/kr-email

rewrite: send mail
rewrite: alter the `send_mail` signature to take advantage of Mail

This allows you to inject a message to send or have one built for
you based on a given config block.  The block is simply eval'd on
a mail message so the API is the same as creating a mail message
manually.
rewrite: rename mailer #send_mail to #deliver

Better, more descriptive method name.  Fits more closely with Mail
and OutgoingEmail method names.  Sounds better.  I like it better.
rewrite: update spec gem description/summary

Just cleaning up and getting ready for release.
Merge pull request #10 from kellyredding/kr-cleanups

Some cleanups in prep of rewrite release
rewrite: cleanup for a cut n paste error in the README
rewrite: add in log/tmp folders; minor cleanup on deliver smtp

Found this when testing live email delivers.
Merge pull request #11 from kellyredding/dat-rewrite

Rewrite